//MIT License
//
//Copyright(c) 2020 Goodman Tao
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files(the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions :
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.


#include "FacadeEncryptEnhanced.h"

#include <stdlib.h>
#include "FileReader.h"
#include "CipherMachineEnhanced.h"
#include "FileWriter.h"


typedef struct
{
	FileReader *pFileReader;
	CipherMachineEnhanced *pCipher;
	FileWriter *pFileWriter;
} Fld;

__OVERRIDE static void FileEncrypt(void *_pThis, va_list *pvlArgs)
{
	FacadeEncryptEnhanced *pThis = _pThis;

	const char *pFileNameSrc = va_arg(*pvlArgs, const char *);
	const char *pFileNameDes = va_arg(*pvlArgs, const char *);

	Fld *pFld = pThis->Fld;
	char *pRead = NULL;
	pFld->pFileReader->Call(pFld->pFileReader, "Read", pFileNameSrc, &pRead);
	char *pEncrypted = NULL;
	pFld->pCipher->Call(pFld->pCipher, "Encrypt", pRead, &pEncrypted);
	pFld->pFileWriter->Call(pFld->pFileWriter, "Write", pEncrypted, pFileNameDes);

	free(pRead);
	free(pEncrypted);
}

static void Clear(void *pParams)
{
	FacadeEncryptEnhanced *pThis = pParams;
	
	Fld *pFld = pThis->Fld;

	pFld->pFileReader->Destroy(pFld->pFileReader);
	pFld->pCipher->Destroy(pFld->pCipher);
	pFld->pFileWriter->Destroy(pFld->pFileWriter);
}

__CONSTRUCTOR(FacadeEncryptEnhanced)
{
	FacadeEncryptEnhanced *pNew = __Inst(__TYPE(FacadeEncryptEnhanced), sizeof(Fld), Clear, 1, 1,
		__METHOD(FileEncrypt),
		__INHERIT(IFacadeEncrypt));

	Fld *pFld = pNew->Fld;
	pFld->pFileReader = __NEW(FileReader);
	pFld->pCipher = __NEW(CipherMachineEnhanced);
	pFld->pFileWriter = __NEW(FileWriter);

	return pNew;
}
